<template>
  <div class="login_container">
    <el-row>
      <el-col :span="12" :xs="0"></el-col>
      <el-col :span="12" :xs="24">
        <el-form class="login_form" :model="loginForm" :rules="rules" ref="loginForms">
          <h1>Hello</h1>
          <h2>欢迎来到硅谷甄选</h2>
          <el-form-item prop="username">
            <el-input :prefix-icon="User" v-model="loginForm.username"></el-input>
          </el-form-item>
          <el-form-item prop="password">
            <el-input type="password" :prefix-icon="Lock" v-model="loginForm.password" show-password></el-input>
          </el-form-item>
          <el-form-item>
            <el-button :loading="loading" class="login_btn" type="primary" @click="login">登录</el-button>
          </el-form-item>
        </el-form>
      </el-col>
    </el-row>
  </div>
</template>

<script setup lang="ts">
  import useUserStore from '@/store/modules/user'
  import { User, Lock } from '@element-plus/icons-vue'
  import { reactive, ref } from 'vue'
  import { useRouter } from 'vue-router'
  import { ElNotification } from 'element-plus'
  //获取引入当前时间的函数
  import { getTime } from '@/utils/time'
  //获取路径
  let $route = useRouter()
  //收集表单数据
  let loginForm = reactive({
    username: 'admin',
    password: '111111',
  })
  let loginForms = ref()
  let loading = ref(false)
  let useStore = useUserStore()

  //自定义校验规则函数
  const validatorUserName = (rule: any, value: any, callback: any) => {
    //rule:即为校验规则对象
    //value:即为表单元素文本内容
    //函数:如果符合条件callBack放行通过即为
    //如果不符合条件callBack方法,注入错误提示信息
    if (value.length >= 5) {
      callback()
    } else {
      callback(new Error('账号长度至少五位'))
    }
  }

  const validatorPassword = (rule: any, value: any, callback: any) => {
    if (value.length >= 6) {
      callback()
    } else {
      callback(new Error('密码长度至少六位'))
    }
  }

  //定义表单校验需要配置对象
  const rules = {
    //规则对象属性:
    //required,代表这个字段务必要校验的
    //min:文本长度至少多少位
    //max:文本长度最多多少位
    //message:错误的提示信息
    //trigger:触发校验表单的时机 change->文本发生变化触发校验,blur:失去焦点的时候触发校验规则
    username: [
      // { required: true, min: 6, max: 10, message: '账号长度至少六位', trigger: 'change' }
      { trigger: 'change', validator: validatorUserName },
    ],
    password: [
      // { required: true, min: 6, max: 15, message: '密码长度至少6位', trigger: 'change' }
      { trigger: 'change', validator: validatorPassword },
    ],
  }
  //登录方法
  const login = async () => {
    try {
      //保证所有的表单校验通过
      await loginForms.value.validate()
      loading.value = true
      await useStore.userLogin(loginForm)
      $route.push('/')
      ElNotification({
        type: 'success',
        message: '登录成功',
        title: `Hi,${getTime()}好`,
      })
      loading.value = false
    } catch (error) {
      if ((error as Error).message) {
        ElNotification({
          type: 'error',
          message: (error as Error).message,
        })
      }
      loading.value = false
    }
  }
</script>

<style scoped lang="scss">
  .login_container {
    width: 100%;
    height: 100vh;
    background: url('@/assets/images/background.jpg') no-repeat;
    background-size: cover;

    .login_form {
      position: relative;
      top: 30vh;
      padding: 40px;
      width: 80%;
      background: url('@/assets/images/login_form.png') no-repeat;
      background-size: cover;

      h1 {
        font-size: 40px;
        color: white;
      }

      h2 {
        margin: 20px 0;
        font-size: 30px;
        color: white;
      }

      .login_btn {
        width: 100%;
      }
    }
  }
</style>
